a tentative insight into the natural world; a concept that is not yet verified but that if true would explain certain facts or phenomena
a belief that can guide behavior
a well-substantiated explanation of some aspect of the natural world; an organized system of accepted knowledge that applies in a variety of circumstances to explain a specific set of phenomena
having or feeling no doubt or uncertainty; confident and assured
certain to occur; destined or inevitable
exercising or taking care great enough to bring assurance
reliable in operation or effect
established irrevocably
definite but not specified or identified
established beyond doubt or question; definitely known
